1 John Stuart Mill, On Liberty and other writings, ed. Stefan Collini (Cambridge: Cambridge University Press, 1989), 34-5.
2 Examples of contemporary political philosophers drawing upon agonistic principles include: John Gray, Two Faces of Liberalism (Cambridge: Polity, 2000); Chantal Mouffe, The Democratic Paradox (London: Verso, 2000), and The Return of the Political (London: Verso, 1993); Jacques Rancière, Disagreement: politics and philosophy (Minneapolis: University of Minnesota Press, 1999).
3 John Gray, Enlightenment's Wake: politics and culture at the close of the modern age (London: Routledge, 1995), 68.
4 See the excellent introduction by Nadia Urbinati to the English translation of selections from Gobetti's writings: "Introduction: Liberalism as a Theory of Conflict," in On Liberal Revolution, ed. Nadia Urbinati (New Haven & London: Yale University Press, 2000).